Study Guide exam2 2008

Study Guide exam2 2008 - Study Guide CDE 430: Exam 2 Spring...

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Study Guide CDE 430: Exam 2 Spring 2008 Sensory and Perceptual Development Infant states (eating, crying, colic) – lecture and ch.5 State: Continuum of alertness Ranges from sleep to activity Organized pattern of physical & physiological responding; related to infant’s level of activation or arousal Once in a state, infant’s tend to stay in that state for anywhere from 15 minutes to several hours States of Sleeping Quiet sleep (NREM): regular respiration, eyes closed, no movement Active sleep (REM): irregular breathing, muscles tense, spontaneous startles, sucks Drowsiness: States of Activity States of Activity Quiet alert: eyes open and scanning the environment; body still; respiration more rapid (than when sleeping). * Best time for interacting with baby Active alert: awake with body and limb movements; less focusing of attention than quiet alert state Crying: high activity level & respiration; Responses to stimulation Orienting response - heightened alertness -Call to baby and they look towards you Defensive response – withdrawal from source -Looks away when something scares them Sleeping Through the Night Babies need to be fed every two hours, babies rarely sleep through the night Association with feeding -“Crying it Out” approach (extinction) Crying Different types of crying -Pain (pause in breathing), hunger, sleepy, angry -In book Should you pick up a crying baby? Yes, soothes them Colic Babies cry for over 3 hours a day, over 3 days a week, for the first 3 months Can’t be soothed, crying is chronic Vision – lecture and ch.5 Visual Acuity (how well do babies see?) -don’t have good vision when born, get better by 6 months How do we know that? if a checkerboard pattern is made gradually finer and finer, we eventually perceive a flat gray infant presented with a patterned stimulus (e.g. vertical black and white lines) and a uniform one (e.g. plain grey) will tend to look more at the patterned one
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By varying the distance between black & white stripes & having the infant compare this with the gray field you can assess the infants’ acuity. Because visual acuity is so poor, infants need to focus on objects that are close (7-8 inches away)
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Study Guide exam2 2008 - Study Guide CDE 430: Exam 2 Spring...

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